CF1276C.Beautiful Rectangle

普及/提高-

通过率:0%

AC君温馨提醒

该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。

题目描述

You are given nn integers. You need to choose a subset and put the chosen numbers in a beautiful rectangle (rectangular matrix). Each chosen number should occupy one of its rectangle cells, each cell must be filled with exactly one chosen number. Some of the nn numbers may not be chosen.

A rectangle (rectangular matrix) is called beautiful if in each row and in each column all values are different.

What is the largest (by the total number of cells) beautiful rectangle you can construct? Print the rectangle itself.

输入格式

The first line contains nn ( 1n41051 \le n \le 4\cdot10^5 ). The second line contains nn integers ( 1ai1091 \le a_i \le 10^9 ).

输出格式

In the first line print xx ( 1xn1 \le x \le n ) — the total number of cells of the required maximum beautiful rectangle. In the second line print pp and qq ( pq=xp \cdot q=x ): its sizes. In the next pp lines print the required rectangle itself. If there are several answers, print any.

输入输出样例

  • 输入#1

    12
    3 1 4 1 5 9 2 6 5 3 5 8
    

    输出#1

    12
    3 4
    1 2 3 5
    3 1 5 4
    5 6 8 9
    
  • 输入#2

    5
    1 1 1 1 1
    

    输出#2

    1
    1 1
    1
    
首页